Table 1.
Background characteristics by maternal region of birth for women with two or more pregnancies, Norway, 1990–2016.
| Maternal Characteristic | Non-Immigrants | Central Europe, Eastern Europe, Central Asia | High Income Countries | Latin America, Caribbean | North Africa, Middle East | South Asia | Southeast Asia, East Asia, Oceania | Sub-Saharan Africa |
|---|---|---|---|---|---|---|---|---|
| No. of women (%) | 398,731 (87.5) | 12,151 (2.7) | 13,508 (3.0) | 1445 (0.3) | 9340 (2.1) | 4641 (1.0) | 9721 (2.1) | 6212 (1.4) |
| Maternal age a (mean ± SD) | 26.2 ± 4.5 | 26.6 ± 4.4 | 29.9 ± 4.4 | 28.3 ± 4.9 | 25.2 ± 4.6 | 24.9 ± 3.9 | 26.9 ± 4.4 | 25.8 ± 4.6 |
| Year of childbirth a (mean ± SD) | 2001 ± 7.0 | 2007 ± 5.8 | 2003 ± 7.0 | 2005 ± 6.0 | 2004 ± 6.3 | 2002 ± 6.9 | 2002 ± 6.8 | 2006 ± 6.3 |
| Parity b (mean ± SD) | 2.4 ± 0.7 | 2.3 ± 0.6 | 2.3 ± 0.6 | 2.2 ± 0.5 | 2.6 ± 0.8 | 2.8 ± 1.0 | 2.4 ± 0.6 | 2.8 ± 1.1 |
| Interpregnancy interval a,c | ||||||||
| months (mean ± SD) | 33.3 ± 26.6 | 31.0 ± 24.4 | 27.2 ± 20.8 | 35.1 ± 29.4 | 31.2 ± 26.3 | 27.7 ± 23.4 | 33.1 ± 26.1 | 24.3 ± 22.6 |
| Length of residence a,d | ||||||||
| years (mean ± SD) | - | 4.1 ± 5.1 | 5.5 ± 5.6 | 3.8 ± 4.6 | 4.2 ± 5.7 | 6.1 ± 7.8 | 5.0 ± 6.2 | 3.6 ± 4.5 |
| Maternal education a,e (%) | ||||||||
| No education | 0.0 | 0.3 | 0.2 | 0.9 | 3.0 | 2.0 | 1.3 | 8.1 |
| Primary education | 18.9 | 18.8 | 9.9 | 22.0 | 43.7 | 39.9 | 34.0 | 50.1 |
| Secondary education | 37.9 | 29.5 | 25.3 | 24.4 | 27.8 | 27.3 | 29.7 | 24.6 |
| University/college | 43.2 | 51.5 | 64.6 | 52.7 | 25.6 | 30.8 | 35.0 | 17.3 |
| Missing b | 0.2 | 22.9 | 15.3 | 25.3 | 36.5 | 31.5 | 24.9 | 33.5 |
SD: standard deviation. a Reported for 1st pregnancy. b Mean for women with at least two pregnancies. c Missing interpregnancy interval (n = 1058). d Missing length of residence (n = 645). e Missing educational level (n = 15,230).